I have flown the same parcel a couple times with my Zenmuse L1 and it only seems to capture the outside datapoints.   Any idea what the source of my issue?  

Is it a photogrammetry only problem?
Maybe too much trees? What frontal/lateral overlap? Speed?

Yes photogrammetry seems to not stitch together in middle on multiple flight - granted my first ones with L1.  My altitude was 330ft, speed 15mph, overlap both at 75%.  I am going to try a much lower altitude with slower speed next go around.  

Megawisdumb Posted at 6-26 04:27
Yes photogrammetry seems to not stitch together in middle on multiple flight - granted my first ones with L1.  My altitude was 330ft, speed 15mph, overlap both at 75%.  I am going to try a much lower altitude with slower speed next go around.

The altitude is ok (even higher when compatible with requested GSD), probably a bit slower and more overlap can help in forested ground.